Can you submit two invitation letters if one doesn't have all the necessary information?

I'm going to China on business and the organization inviting me sent a letter with the names, DOB, gender, stamp and signature, etc. of everyone going on the business trip. However, the dates on this invitation letter are slightly different than my actual arrival and departure dates. I have another letter from the organization that is a personal invitation with the correct arrival and departure dates, but this letter doesn't have the organization's official stamp. Since between the two letters all the correct information is there, can I submit both to the Consulate and get my visa issues without any trouble?